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Inspection and Emissions Final test Questions and Answers 100% Solved $14.49   Add to cart

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Inspection and Emissions Final test Questions and Answers 100% Solved

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  • Course
  • Pa emission
  • Institution
  • Pa Emission

Inspection and Emissions Final test

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  • October 30, 2024
  • 16
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Pa emission
  • Pa emission
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julianah420
Inspection and Emissions Final test

station hotline - answer general/specific program questions

customer hotline - answer for motorists to get answers

sticker department - answer help with sticker and insert orders

what is covered in emissions inspector certification (EIC)? - answer visual antitampering
check
two-speed idle (TSI) test
gas-cap test
on- board diagnostics (OBD) I/M checks

a Pa emissions inspector must meet what requirements? - answer at least 18
have a valid driver’s license
enroll/qualify with PennDOT
Successfully complete the EIC course

where does air pollution come from? - answer hydrocarbons (HCs)
carbon monoxide (CO)
nitrogen oxides (NOx)
sulfur dioxide (S02)
particulate matter that is released into the atmosphere
ozone (smog)

examples of hydrocarbons - answer gasoline
diesel
natural gas

what are 2 ways that excessive HCs are emitted by vehicles? - answer incomplete
combustion
fuel evaporation

what can tailpipe HC emissions be caused by? - answer ignition system misfiring
improper ignition timing
rich fuel mixtures
engine mechanical deficiencies
uneven fuel injector delivery
anything that would harm or influence the combustion process

what is CO? - answer a colorless, odorless, and poisonous gas

,how is CO produced? - answer by the incomplete burning of a fuel

abbreviation for ozone smog - answerO3

When are NOx formed in the engine? - answer during high temperature combustions

how is smog created? - answer NOx and HC combine and then exposed to sunlight

what is NOx the primary cause of? - answer acid rain

short term effects of NOx - answer irritation of the eyes, nose, and throat

long term effect - answer respiratory problems (ex. asthma)

excessive NOx emissions can be caused by what? - answer lean air fuel mixture
defective exhaust gas recirculation valve (EGR)
higher than normal engine temperatures
vacuum leaks
advanced ignition timing

too much or too little of oxygen can cause what? - answer improper combustion

the improper combustion of oxygen creates what? - answer pollution

What can cause not enough O2 emissions? - answer rich air fuel mixture
dirty air filter
faulty injectors
high fuel pressures
a defective system sensor
restricted pcv system
EVAP system purging at low or idle speeds

too much O2 can be caused by what? - answer lean air fuel mixture
vacuum leak
engine misfire
exhaust leak

how is ozone smog created? - answer a chemical reaction between NOx and HC in
sunlight

ozone doesn’t go straight into the air, instead where is it created? - answer at ground
level

what is particulate matter? - answer dust
soot
other air introduced solid materials

, how is particulates released into the air? - answer combustion

What effects can these particles cause? - answer damage to the lungs
other health problems

what mixture most efficiently uses the fuel and the lowest emissions? - answer14.7
parts of air to every 1 parts of fuel

What is the name of the most efficiently used ratio for gas? - answer stoichiometric ratio

what is NOx the result of? - answer the combination of Nitrogen (N) and oxygen (02)

when does NOx majorly increase? - answer when combustion temperatures are higher
than 2,500 degrees F

What main gas is drawn into the engine and what percent? - answer80% N

What kind of gas is N? - answer inert gas

what does inert mean? - answer under normal conditions the compound doesn't want to
mix with other compounds

what happens when the temperature in the combustion chamber is too high? – answer
N looses its inert qualities and can combine with O2

When 02 and N combine what does it make? - answer NOx

At what temperature does the combustion chamber exceed normal? - answer2,500
degrees F

What is N? - answer nitrogen

what gases combine under unnormal circumstances? – answer N and 02

ppm? - answer parts per million

when the engine runs at Stoichiometric level, NOx production ranges from what? -
answer1,700-2,500 parts per million (ppm)

what is an EGR valve for? - answer reduce nitrogen

in 1984 What did Pa implement for the first time? - answeremissions I/M program

What counties were the first ones to receive a decentralized model for the emissions
program? - answer5-philadelphia area

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